This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1230S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI63 Standard Cylinder SI63X1230S
The AirTAC Airtac SI63 Standard Cylinder SI63X1230S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1230mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1230S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1230 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1230S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI63 Standard Cylinder SI63X1230S
The AirTAC SI63X1230S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1230 mm stroke. Generating 1559 N push force at 0.5 MPa, it is replaced directly by the SAI63X1230S. This direct upgrade keeps the exact interface, port and stroke, fitting existing fixtures seamlessly.
The SAI model upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL lock, SAIF valve and BSAI clamp variants the SI lacked.
Airtac SI63 Standard Cylinder SI63X1230S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1230S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1230S |
| Bore size | Ø63 mm |
| Stroke | 1230 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI63X1230S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAI63X1230S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63X1230S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1230 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI63 Standard Cylinder SI63X1230S Is Used
Long-Stroke Diversion
Pushes heavy pallets across wide transfer lines using the full 1230 mm extension, relying on external guides to prevent rod bending.
Vertical Material Lift
Raises tiered storage platforms, safely handling the 79 kg vertical load capacity derived from the 0.5 MPa thrust rating.
Automated Press Feed
Advances long metal stock into forming stations, utilizing the 1559 N push force and adjustable end cushions to decelerate loads.
Replacing the Airtac SI63 Standard Cylinder SI63X1230S with the SAI63X1230S
To replace this SI63X1230S, order the SAI63X1230S with the same ISO 15552 mounting interface, 63 mm bore, 1230 mm stroke, G3/8 port and magnet. Confirm your thread option (PT, G or NPT) and mounting accessory (LB, FA, TC, etc.). For sizing, the neighbouring 50 mm bore yields 982 N push at 0.5 MPa, while the 80 mm bore provides 2513 N. Because this is a long 1230 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding, use the SAIL lock variant or an external pilot check valve. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1230S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63X1230S FAQ
Yes, the SI63X1230S is discontinued. The direct replacement is the AirTAC SAI63X1230S. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 1230 mm stroke, G3/8 port and mounting interface.
This double-acting cylinder features a G3/8 air port and generates 1559 N push / 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 30 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1230S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1230S replacement — usually within 7-8 hours.